// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_APP_LIST_VIEWS_SEARCH_RESULT_LIST_VIEW_H_
#define UI_APP_LIST_VIEWS_SEARCH_RESULT_LIST_VIEW_H_

#include <stddef.h>

#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "ui/app_list/views/search_result_container_view.h"
#include "ui/gfx/animation/animation_delegate.h"
#include "ui/views/view.h"

namespace gfx {
class LinearAnimation;
}

namespace app_list {
namespace test {
    class SearchResultListViewTest;
}

class AppListViewDelegate;
class SearchResultListViewDelegate;
class SearchResultView;

// SearchResultListView displays SearchResultList with a list of
// SearchResultView.
class APP_LIST_EXPORT SearchResultListView : public gfx::AnimationDelegate,
                                             public SearchResultContainerView {
public:
    SearchResultListView(SearchResultListViewDelegate* delegate,
        AppListViewDelegate* view_delegate);
    ~SearchResultListView() override;

    void UpdateAutoLaunchState();

    bool IsResultViewSelected(const SearchResultView* result_view) const;

    void SearchResultActivated(SearchResultView* view, int event_flags);

    void SearchResultActionActivated(SearchResultView* view,
        size_t action_index,
        int event_flags);

    void OnSearchResultInstalled(SearchResultView* view);

    // Overridden from views::View:
    bool OnKeyPressed(const ui::KeyEvent& event) override;
    gfx::Size GetPreferredSize() const override;

    // Overridden from ui::ListModelObserver:
    void ListItemsRemoved(size_t start, size_t count) override;

    // Overridden from SearchResultContainerView:
    void OnContainerSelected(bool from_bottom,
        bool directional_movement) override;
    void NotifyFirstResultYIndex(int y_index) override;
    int GetYSize() override;

private:
    friend class test::SearchResultListViewTest;

    // Overridden from SearchResultContainerView:
    int Update() override;
    void UpdateSelectedIndex(int old_selected, int new_selected) override;

    // Updates the auto launch states.
    void SetAutoLaunchTimeout(const base::TimeDelta& timeout);
    void CancelAutoLaunchTimeout();

    // Helper function to get SearchResultView at given |index|.
    SearchResultView* GetResultViewAt(int index);

    // Forcibly auto-launch for test if it is in auto-launching state.
    void ForceAutoLaunchForTest();

    // Overridden from views::View:
    void Layout() override;
    int GetHeightForWidth(int w) const override;
    void VisibilityChanged(views::View* starting_from, bool is_visible) override;

    // Overridden from gfx::AnimationDelegate:
    void AnimationEnded(const gfx::Animation* animation) override;
    void AnimationProgressed(const gfx::Animation* animation) override;

    SearchResultListViewDelegate* delegate_; // Not owned.
    AppListViewDelegate* view_delegate_; // Not owned.

    views::View* results_container_;
    views::View* auto_launch_indicator_;
    scoped_ptr<gfx::LinearAnimation> auto_launch_animation_;

    DISALLOW_COPY_AND_ASSIGN(SearchResultListView);
};

} // namespace app_list

#endif // UI_APP_LIST_VIEWS_SEARCH_RESULT_LIST_VIEW_H_
